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Nitrogen-rich covalent organic frameworks with multiple carbonyls for high-performance sodium batteries

Author

Listed:
  • Ruijuan Shi

    (Nankai University)

  • Luojia Liu

    (Nankai University)

  • Yong Lu

    (Nankai University)

  • Chenchen Wang

    (Nankai University)

  • Yixin Li

    (Nankai University)

  • Lin Li

    (Nankai University)

  • Zhenhua Yan

    (Nankai University)

  • Jun Chen

    (Nankai University)

Abstract

Covalent organic frameworks with designable periodic skeletons and ordered nanopores have attracted increasing attention as promising cathode materials for rechargeable batteries. However, the reported cathodes are plagued by limited capacity and unsatisfying rate performance. Here we report a honeycomb-like nitrogen-rich covalent organic framework with multiple carbonyls. The sodium storage ability of pyrazines and carbonyls and the up-to twelve sodium-ion redox chemistry mechanism for each repetitive unit have been demonstrated by in/ex-situ Fourier transform infrared spectra and density functional theory calculations. The insoluble electrode exhibits a remarkably high specific capacity of 452.0 mAh g−1, excellent cycling stability (~96% capacity retention after 1000 cycles) and high rate performance (134.3 mAh g−1 at 10.0 A g−1). Furthermore, a pouch-type battery is assembled, displaying the gravimetric and volumetric energy density of 101.1 Wh kg−1cell and 78.5 Wh L−1cell, respectively, indicating potentially practical applications of conjugated polymers in rechargeable batteries.

Suggested Citation

  • Ruijuan Shi & Luojia Liu & Yong Lu & Chenchen Wang & Yixin Li & Lin Li & Zhenhua Yan & Jun Chen, 2020. "Nitrogen-rich covalent organic frameworks with multiple carbonyls for high-performance sodium batteries," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-019-13739-5
    DOI: 10.1038/s41467-019-13739-5
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    Cited by:

    1. Wenda Li & Hengyue Xu & Hongyi Zhang & Facai Wei & Lingyan Huang & Shanzhe Ke & Jianwei Fu & Chengbin Jing & Jiangong Cheng & Shaohua Liu, 2023. "Tuning electron delocalization of hydrogen-bonded organic framework cathode for high-performance zinc-organic batteries," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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